Malicious PDF — malware analysis report

Static analysis result for SHA-256 4783a61267e7bcd0…

MALICIOUS

PDF

42.0 KB Created: 2020-10-19 20:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 769014bd3869fe6cdf181af3e4783572 SHA-1: 6dae8192f09f517655451b460fdb66c6fb1d0aa0 SHA-256: 4783a61267e7bcd0f0f941379ea680454563a6a97dc60209a24e7c20bee8b555
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/123?keyword=reading+passages+esl+pdf In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/bijuloribo-tuvevomunalet-didozopoj.pdfIn PDF document text
    • https://dimejozetef.weebly.com/uploads/1/3/1/0/131070151/mitolowor.pdfIn PDF document text
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/1c5b44f.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7360136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5f893c2590d90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f880d80992a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f88f672e25cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8a94099c62d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f89073d3a147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f873fef1eb05.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/bewof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0839/1330/files/9769705775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6354/8831/files/this_thing_called_life_ernest_holmes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7435/3850/files/wozofanesobatadesetaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9529/2059/files/bijugidakobukodupupuzef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8825/6418/files/bawadadopajumufiparaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7795/0376/files/apk_for_spotify_premium_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6996/7013/files/saxafukujalinug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9294/4058/files/58966033804.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FD 5120 bytes
SHA-256: fd840d0915548262ec845852c8378d1e34422a90f4195d8070c79ca4efcb66b3
font_01_sfnt_off00007882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7882 10184 bytes
SHA-256: 28f0d4bff339c1b040a6f2a0c1c9fe27c41700b35d40fb12889c56b3028dcd1d

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